1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * linux/arch/arm/mm/proc-v7.S
5 * Copyright (C) 2001 Deep Blue Solutions Ltd.
7 * This is the "shell" of the ARMv7 processor support.
9 #include <linux/arm-smccc.h>
10 #include <linux/init.h>
11 #include <linux/linkage.h>
12 #include <linux/pgtable.h>
13 #include <asm/assembler.h>
14 #include <asm/asm-offsets.h>
15 #include <asm/hwcap.h>
16 #include <asm/pgtable-hwdef.h>
17 #include <asm/memory.h>
19 #include "proc-macros.S"
21 #ifdef CONFIG_ARM_LPAE
22 #include "proc-v7-3level.S"
24 #include "proc-v7-2level.S"
27 ENTRY(cpu_v7_proc_init)
29 ENDPROC(cpu_v7_proc_init)
31 ENTRY(cpu_v7_proc_fin)
32 mrc p15, 0, r0, c1, c0, 0 @ ctrl register
33 bic r0, r0, #0x1000 @ ...i............
34 bic r0, r0, #0x0006 @ .............ca.
35 mcr p15, 0, r0, c1, c0, 0 @ disable caches
37 ENDPROC(cpu_v7_proc_fin)
40 * cpu_v7_reset(loc, hyp)
42 * Perform a soft reset of the system. Put the CPU into the
43 * same state as it would be if it had been reset, and branch
44 * to what would be the reset vector.
46 * - loc - location to jump to for soft reset
47 * - hyp - indicate if restart occurs in HYP mode
49 * This code must be executed using a flat identity mapping with
53 .pushsection .idmap.text, "ax"
55 mrc p15, 0, r2, c1, c0, 0 @ ctrl register
56 bic r2, r2, #0x1 @ ...............m
57 THUMB( bic r2, r2, #1 << 30 ) @ SCTLR.TE (Thumb exceptions)
58 mcr p15, 0, r2, c1, c0, 0 @ disable MMU
60 #ifdef CONFIG_ARM_VIRT_EXT
62 bne __hyp_soft_restart
71 * Idle the processor (eg, wait for interrupt).
73 * IRQs are already disabled.
76 dsb @ WFI may enter a low-power mode
79 ENDPROC(cpu_v7_do_idle)
81 ENTRY(cpu_v7_dcache_clean_area)
82 ALT_SMP(W(nop)) @ MP extensions imply L1 PTW
85 1: dcache_line_size r2, r3
86 2: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
92 ENDPROC(cpu_v7_dcache_clean_area)
94 #ifdef CONFIG_ARM_PSCI
96 ENTRY(cpu_v7_smc_switch_mm)
98 movw r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1
99 movt r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1
103 ENDPROC(cpu_v7_smc_switch_mm)
105 ENTRY(cpu_v7_hvc_switch_mm)
107 movw r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1
108 movt r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1
112 ENDPROC(cpu_v7_hvc_switch_mm)
114 ENTRY(cpu_v7_iciallu_switch_mm)
116 mcr p15, 0, r3, c7, c5, 0 @ ICIALLU
118 ENDPROC(cpu_v7_iciallu_switch_mm)
119 ENTRY(cpu_v7_bpiall_switch_mm)
121 mcr p15, 0, r3, c7, c5, 6 @ flush BTAC/BTB
123 ENDPROC(cpu_v7_bpiall_switch_mm)
125 string cpu_v7_name, "ARMv7 Processor"
128 /* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */
129 .globl cpu_v7_suspend_size
130 .equ cpu_v7_suspend_size, 4 * 9
131 #ifdef CONFIG_ARM_CPU_SUSPEND
132 ENTRY(cpu_v7_do_suspend)
133 stmfd sp!, {r4 - r11, lr}
134 mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID
135 mrc p15, 0, r5, c13, c0, 3 @ User r/o thread ID
138 mrc p15, 0, r6, c3, c0, 0 @ Domain ID
139 #ifdef CONFIG_ARM_LPAE
140 mrrc p15, 1, r5, r7, c2 @ TTB 1
142 mrc p15, 0, r7, c2, c0, 1 @ TTB 1
144 mrc p15, 0, r11, c2, c0, 2 @ TTB control register
146 mrc p15, 0, r8, c1, c0, 0 @ Control register
147 mrc p15, 0, r9, c1, c0, 1 @ Auxiliary control register
148 mrc p15, 0, r10, c1, c0, 2 @ Co-processor access control
150 ldmfd sp!, {r4 - r11, pc}
151 ENDPROC(cpu_v7_do_suspend)
153 ENTRY(cpu_v7_do_resume)
155 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
156 mcr p15, 0, ip, c13, c0, 1 @ set reserved context ID
158 mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
159 mcr p15, 0, r5, c13, c0, 3 @ User r/o thread ID
162 mcr p15, 0, ip, c8, c7, 0 @ invalidate TLBs
163 mcr p15, 0, r6, c3, c0, 0 @ Domain ID
164 #ifdef CONFIG_ARM_LPAE
165 mcrr p15, 0, r1, ip, c2 @ TTB 0
166 mcrr p15, 1, r5, r7, c2 @ TTB 1
168 ALT_SMP(orr r1, r1, #TTB_FLAGS_SMP)
169 ALT_UP(orr r1, r1, #TTB_FLAGS_UP)
170 mcr p15, 0, r1, c2, c0, 0 @ TTB 0
171 mcr p15, 0, r7, c2, c0, 1 @ TTB 1
173 mcr p15, 0, r11, c2, c0, 2 @ TTB control register
176 mcr p15, 0, r4, c10, c2, 0 @ write PRRR
177 mcr p15, 0, r5, c10, c2, 1 @ write NMRR
178 #endif /* CONFIG_MMU */
179 mrc p15, 0, r4, c1, c0, 1 @ Read Auxiliary control register
180 teq r4, r9 @ Is it already set?
181 mcrne p15, 0, r9, c1, c0, 1 @ No, so write it
182 mcr p15, 0, r10, c1, c0, 2 @ Co-processor access control
185 mov r0, r8 @ control register
187 ENDPROC(cpu_v7_do_resume)
190 .globl cpu_ca9mp_suspend_size
191 .equ cpu_ca9mp_suspend_size, cpu_v7_suspend_size + 4 * 2
192 #ifdef CONFIG_ARM_CPU_SUSPEND
193 ENTRY(cpu_ca9mp_do_suspend)
195 mrc p15, 0, r4, c15, c0, 1 @ Diagnostic register
196 mrc p15, 0, r5, c15, c0, 0 @ Power register
200 ENDPROC(cpu_ca9mp_do_suspend)
202 ENTRY(cpu_ca9mp_do_resume)
204 mrc p15, 0, r10, c15, c0, 1 @ Read Diagnostic register
205 teq r4, r10 @ Already restored?
206 mcrne p15, 0, r4, c15, c0, 1 @ No, so restore it
207 mrc p15, 0, r10, c15, c0, 0 @ Read Power register
208 teq r5, r10 @ Already restored?
209 mcrne p15, 0, r5, c15, c0, 0 @ No, so restore it
211 ENDPROC(cpu_ca9mp_do_resume)
214 #ifdef CONFIG_CPU_PJ4B
215 globl_equ cpu_pj4b_switch_mm, cpu_v7_switch_mm
216 globl_equ cpu_pj4b_set_pte_ext, cpu_v7_set_pte_ext
217 globl_equ cpu_pj4b_proc_init, cpu_v7_proc_init
218 globl_equ cpu_pj4b_proc_fin, cpu_v7_proc_fin
219 globl_equ cpu_pj4b_reset, cpu_v7_reset
220 #ifdef CONFIG_PJ4B_ERRATA_4742
221 ENTRY(cpu_pj4b_do_idle)
222 dsb @ WFI may enter a low-power mode
226 ENDPROC(cpu_pj4b_do_idle)
228 globl_equ cpu_pj4b_do_idle, cpu_v7_do_idle
230 globl_equ cpu_pj4b_dcache_clean_area, cpu_v7_dcache_clean_area
231 #ifdef CONFIG_ARM_CPU_SUSPEND
232 ENTRY(cpu_pj4b_do_suspend)
233 stmfd sp!, {r6 - r10}
234 mrc p15, 1, r6, c15, c1, 0 @ save CP15 - extra features
235 mrc p15, 1, r7, c15, c2, 0 @ save CP15 - Aux Func Modes Ctrl 0
236 mrc p15, 1, r8, c15, c1, 2 @ save CP15 - Aux Debug Modes Ctrl 2
237 mrc p15, 1, r9, c15, c1, 1 @ save CP15 - Aux Debug Modes Ctrl 1
238 mrc p15, 0, r10, c9, c14, 0 @ save CP15 - PMC
239 stmia r0!, {r6 - r10}
240 ldmfd sp!, {r6 - r10}
242 ENDPROC(cpu_pj4b_do_suspend)
244 ENTRY(cpu_pj4b_do_resume)
245 ldmia r0!, {r6 - r10}
246 mcr p15, 1, r6, c15, c1, 0 @ restore CP15 - extra features
247 mcr p15, 1, r7, c15, c2, 0 @ restore CP15 - Aux Func Modes Ctrl 0
248 mcr p15, 1, r8, c15, c1, 2 @ restore CP15 - Aux Debug Modes Ctrl 2
249 mcr p15, 1, r9, c15, c1, 1 @ restore CP15 - Aux Debug Modes Ctrl 1
250 mcr p15, 0, r10, c9, c14, 0 @ restore CP15 - PMC
252 ENDPROC(cpu_pj4b_do_resume)
254 .globl cpu_pj4b_suspend_size
255 .equ cpu_pj4b_suspend_size, cpu_v7_suspend_size + 4 * 5
260 @ Invoke the v7_invalidate_l1() function, which adheres to the AAPCS
261 @ rules, and so it may corrupt registers that we need to preserve.
263 .macro do_invalidate_l1
267 bl v7_invalidate_l1 @ corrupts {r0-r3, ip, lr}
276 * Initialise TLB, Caches, and MMU state ready to switch the MMU
277 * on. Return in r0 the new CP15 C1 control register setting.
279 * r1, r2, r4, r5, r9, r13 must be preserved - r13 is not a stack
280 * r4: TTBR0 (low word)
281 * r5: TTBR0 (high word if LPAE)
283 * r9: Main ID register
285 * This should be able to cover all ARMv7 cores.
287 * It is assumed that:
288 * - cache type register is implemented
295 mov r10, #(1 << 0) @ Cache/TLB ops broadcasting
306 orr r10, r10, #(1 << 6) @ Enable SMP/nAMP mode
307 ALT_SMP(mrc p15, 0, r0, c1, c0, 1)
308 ALT_UP(mov r0, r10) @ fake it for UP
309 orr r10, r10, r0 @ Set required bits
310 teq r10, r0 @ Were they already set?
311 mcrne p15, 0, r10, c1, c0, 1 @ No, update register
317 * r0, r10 available for use
318 * r1, r2, r4, r5, r9, r13: must be preserved
319 * r3: contains MIDR rX number in bits 23-20
320 * r6: contains MIDR rXpY as 8-bit XY number
324 #if defined(CONFIG_ARM_ERRATA_430973) && !defined(CONFIG_ARCH_MULTIPLATFORM)
325 teq r3, #0x00100000 @ only present in r1p*
326 mrceq p15, 0, r0, c1, c0, 1 @ read aux control register
327 orreq r0, r0, #(1 << 6) @ set IBE to 1
328 mcreq p15, 0, r0, c1, c0, 1 @ write aux control register
330 #ifdef CONFIG_ARM_ERRATA_458693
331 teq r6, #0x20 @ only present in r2p0
332 mrceq p15, 0, r0, c1, c0, 1 @ read aux control register
333 orreq r0, r0, #(1 << 5) @ set L1NEON to 1
334 orreq r0, r0, #(1 << 9) @ set PLDNOP to 1
335 mcreq p15, 0, r0, c1, c0, 1 @ write aux control register
337 #ifdef CONFIG_ARM_ERRATA_460075
338 teq r6, #0x20 @ only present in r2p0
339 mrceq p15, 1, r0, c9, c0, 2 @ read L2 cache aux ctrl register
341 orreq r0, r0, #(1 << 22) @ set the Write Allocate disable bit
342 mcreq p15, 1, r0, c9, c0, 2 @ write the L2 cache aux ctrl register
347 #ifdef CONFIG_ARM_ERRATA_742230
348 cmp r6, #0x22 @ only present up to r2p2
349 mrcle p15, 0, r0, c15, c0, 1 @ read diagnostic register
350 orrle r0, r0, #1 << 4 @ set bit #4
351 mcrle p15, 0, r0, c15, c0, 1 @ write diagnostic register
353 #ifdef CONFIG_ARM_ERRATA_742231
354 teq r6, #0x20 @ present in r2p0
355 teqne r6, #0x21 @ present in r2p1
356 teqne r6, #0x22 @ present in r2p2
357 mrceq p15, 0, r0, c15, c0, 1 @ read diagnostic register
358 orreq r0, r0, #1 << 12 @ set bit #12
359 orreq r0, r0, #1 << 22 @ set bit #22
360 mcreq p15, 0, r0, c15, c0, 1 @ write diagnostic register
362 #ifdef CONFIG_ARM_ERRATA_743622
363 teq r3, #0x00200000 @ only present in r2p*
364 mrceq p15, 0, r0, c15, c0, 1 @ read diagnostic register
365 orreq r0, r0, #1 << 6 @ set bit #6
366 mcreq p15, 0, r0, c15, c0, 1 @ write diagnostic register
368 #if defined(CONFIG_ARM_ERRATA_751472) && defined(CONFIG_SMP)
369 ALT_SMP(cmp r6, #0x30) @ present prior to r3p0
371 mrclt p15, 0, r0, c15, c0, 1 @ read diagnostic register
372 orrlt r0, r0, #1 << 11 @ set bit #11
373 mcrlt p15, 0, r0, c15, c0, 1 @ write diagnostic register
379 #ifdef CONFIG_ARM_ERRATA_773022
380 cmp r6, #0x4 @ only present up to r0p4
381 mrcle p15, 0, r0, c1, c0, 1 @ read aux control register
382 orrle r0, r0, #1 << 1 @ disable loop buffer
383 mcrle p15, 0, r0, c1, c0, 1 @ write aux control register
388 #ifdef CONFIG_ARM_ERRATA_818325_852422
389 mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register
390 orr r10, r10, #1 << 12 @ set bit #12
391 mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register
393 #ifdef CONFIG_ARM_ERRATA_821420
394 mrc p15, 0, r10, c15, c0, 2 @ read internal feature reg
395 orr r10, r10, #1 << 1 @ set bit #1
396 mcr p15, 0, r10, c15, c0, 2 @ write internal feature reg
398 #ifdef CONFIG_ARM_ERRATA_825619
399 mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register
400 orr r10, r10, #1 << 24 @ set bit #24
401 mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register
403 #ifdef CONFIG_ARM_ERRATA_857271
404 mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register
405 orr r10, r10, #3 << 10 @ set bits #10 and #11
406 mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register
411 #ifdef CONFIG_ARM_ERRATA_852421
412 cmp r6, #0x12 @ only present up to r1p2
413 mrcle p15, 0, r10, c15, c0, 1 @ read diagnostic register
414 orrle r10, r10, #1 << 24 @ set bit #24
415 mcrle p15, 0, r10, c15, c0, 1 @ write diagnostic register
417 #ifdef CONFIG_ARM_ERRATA_852423
418 cmp r6, #0x12 @ only present up to r1p2
419 mrcle p15, 0, r10, c15, c0, 1 @ read diagnostic register
420 orrle r10, r10, #1 << 12 @ set bit #12
421 mcrle p15, 0, r10, c15, c0, 1 @ write diagnostic register
423 #ifdef CONFIG_ARM_ERRATA_857272
424 mrc p15, 0, r10, c15, c0, 1 @ read diagnostic register
425 orr r10, r10, #3 << 10 @ set bits #10 and #11
426 mcr p15, 0, r10, c15, c0, 1 @ write diagnostic register
431 #ifdef CONFIG_CPU_PJ4B
433 /* Auxiliary Debug Modes Control 1 Register */
434 #define PJ4B_STATIC_BP (1 << 2) /* Enable Static BP */
435 #define PJ4B_INTER_PARITY (1 << 8) /* Disable Internal Parity Handling */
436 #define PJ4B_CLEAN_LINE (1 << 16) /* Disable data transfer for clean line */
438 /* Auxiliary Debug Modes Control 2 Register */
439 #define PJ4B_FAST_LDR (1 << 23) /* Disable fast LDR */
440 #define PJ4B_SNOOP_DATA (1 << 25) /* Do not interleave write and snoop data */
441 #define PJ4B_CWF (1 << 27) /* Disable Critical Word First feature */
442 #define PJ4B_OUTSDNG_NC (1 << 29) /* Disable outstanding non cacheable rqst */
443 #define PJ4B_L1_REP_RR (1 << 30) /* L1 replacement - Strict round robin */
444 #define PJ4B_AUX_DBG_CTRL2 (PJ4B_SNOOP_DATA | PJ4B_CWF |\
445 PJ4B_OUTSDNG_NC | PJ4B_L1_REP_RR)
447 /* Auxiliary Functional Modes Control Register 0 */
448 #define PJ4B_SMP_CFB (1 << 1) /* Set SMP mode. Join the coherency fabric */
449 #define PJ4B_L1_PAR_CHK (1 << 2) /* Support L1 parity checking */
450 #define PJ4B_BROADCAST_CACHE (1 << 8) /* Broadcast Cache and TLB maintenance */
452 /* Auxiliary Debug Modes Control 0 Register */
453 #define PJ4B_WFI_WFE (1 << 22) /* WFI/WFE - serve the DVM and back to idle */
455 /* Auxiliary Debug Modes Control 1 Register */
456 mrc p15, 1, r0, c15, c1, 1
457 orr r0, r0, #PJ4B_CLEAN_LINE
458 orr r0, r0, #PJ4B_INTER_PARITY
459 bic r0, r0, #PJ4B_STATIC_BP
460 mcr p15, 1, r0, c15, c1, 1
462 /* Auxiliary Debug Modes Control 2 Register */
463 mrc p15, 1, r0, c15, c1, 2
464 bic r0, r0, #PJ4B_FAST_LDR
465 orr r0, r0, #PJ4B_AUX_DBG_CTRL2
466 mcr p15, 1, r0, c15, c1, 2
468 /* Auxiliary Functional Modes Control Register 0 */
469 mrc p15, 1, r0, c15, c2, 0
471 orr r0, r0, #PJ4B_SMP_CFB
473 orr r0, r0, #PJ4B_L1_PAR_CHK
474 orr r0, r0, #PJ4B_BROADCAST_CACHE
475 mcr p15, 1, r0, c15, c2, 0
477 /* Auxiliary Debug Modes Control 0 Register */
478 mrc p15, 1, r0, c15, c1, 0
479 orr r0, r0, #PJ4B_WFI_WFE
480 mcr p15, 1, r0, c15, c1, 0
482 #endif /* CONFIG_CPU_PJ4B */
488 and r0, r9, #0xff000000 @ ARM?
491 and r3, r9, #0x00f00000 @ variant
492 and r6, r9, #0x0000000f @ revision
493 orr r6, r6, r3, lsr #20-4 @ combine variant and revision
494 ubfx r0, r9, #4, #12 @ primary part number
496 /* Cortex-A8 Errata */
497 ldr r10, =0x00000c08 @ Cortex-A8 primary part number
501 /* Cortex-A9 Errata */
502 ldr r10, =0x00000c09 @ Cortex-A9 primary part number
506 /* Cortex-A12 Errata */
507 ldr r10, =0x00000c0d @ Cortex-A12 primary part number
511 /* Cortex-A17 Errata */
512 ldr r10, =0x00000c0e @ Cortex-A17 primary part number
516 /* Cortex-A15 Errata */
517 ldr r10, =0x00000c0f @ Cortex-A15 primary part number
523 mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate
525 mcr p15, 0, r10, c8, c7, 0 @ invalidate I + D TLBs
526 v7_ttb_setup r10, r4, r5, r8, r3 @ TTBCR, TTBRx setup
529 mcr p15, 0, r3, c10, c2, 0 @ write PRRR
530 mcr p15, 0, r6, c10, c2, 1 @ write NMRR
532 dsb @ Complete invalidations
533 #ifndef CONFIG_ARM_THUMBEE
534 mrc p15, 0, r0, c0, c1, 0 @ read ID_PFR0 for ThumbEE
535 and r0, r0, #(0xf << 12) @ ThumbEE enabled field
536 teq r0, #(1 << 12) @ check if ThumbEE is present
539 mcr p14, 6, r3, c1, c0, 0 @ Initialize TEEHBR to 0
540 mrc p14, 6, r0, c0, c0, 0 @ load TEECR
541 orr r0, r0, #1 @ set the 1st bit in order to
542 mcr p14, 6, r0, c0, c0, 0 @ stop userspace TEEHBR access
547 ARM_BE8(orr r6, r6, #1 << 25) @ big-endian page tables
548 #ifdef CONFIG_SWP_EMULATE
549 orr r3, r3, #(1 << 10) @ set SW bit in "clear"
550 bic r6, r6, #(1 << 10) @ clear it in "mmuset"
552 mrc p15, 0, r0, c1, c0, 0 @ read control register
553 bic r0, r0, r3 @ clear bits them
554 orr r0, r0, r6 @ set them
555 THUMB( orr r0, r0, #1 << 30 ) @ Thumb exceptions
556 ret lr @ return to head.S:__ret
561 .weak cpu_v7_bugs_init
563 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
564 define_processor_functions v7, dabort=v7_early_abort, pabort=v7_pabort, suspend=1, bugs=cpu_v7_bugs_init
566 #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
567 @ generic v7 bpiall on context switch
568 globl_equ cpu_v7_bpiall_proc_init, cpu_v7_proc_init
569 globl_equ cpu_v7_bpiall_proc_fin, cpu_v7_proc_fin
570 globl_equ cpu_v7_bpiall_reset, cpu_v7_reset
571 globl_equ cpu_v7_bpiall_do_idle, cpu_v7_do_idle
572 globl_equ cpu_v7_bpiall_dcache_clean_area, cpu_v7_dcache_clean_area
573 globl_equ cpu_v7_bpiall_set_pte_ext, cpu_v7_set_pte_ext
574 globl_equ cpu_v7_bpiall_suspend_size, cpu_v7_suspend_size
575 #ifdef CONFIG_ARM_CPU_SUSPEND
576 globl_equ cpu_v7_bpiall_do_suspend, cpu_v7_do_suspend
577 globl_equ cpu_v7_bpiall_do_resume, cpu_v7_do_resume
579 define_processor_functions v7_bpiall, dabort=v7_early_abort, pabort=v7_pabort, suspend=1, bugs=cpu_v7_bugs_init
581 #define HARDENED_BPIALL_PROCESSOR_FUNCTIONS v7_bpiall_processor_functions
583 #define HARDENED_BPIALL_PROCESSOR_FUNCTIONS v7_processor_functions
586 #ifndef CONFIG_ARM_LPAE
587 @ Cortex-A8 - always needs bpiall switch_mm implementation
588 globl_equ cpu_ca8_proc_init, cpu_v7_proc_init
589 globl_equ cpu_ca8_proc_fin, cpu_v7_proc_fin
590 globl_equ cpu_ca8_reset, cpu_v7_reset
591 globl_equ cpu_ca8_do_idle, cpu_v7_do_idle
592 globl_equ cpu_ca8_dcache_clean_area, cpu_v7_dcache_clean_area
593 globl_equ cpu_ca8_set_pte_ext, cpu_v7_set_pte_ext
594 globl_equ cpu_ca8_switch_mm, cpu_v7_bpiall_switch_mm
595 globl_equ cpu_ca8_suspend_size, cpu_v7_suspend_size
596 #ifdef CONFIG_ARM_CPU_SUSPEND
597 globl_equ cpu_ca8_do_suspend, cpu_v7_do_suspend
598 globl_equ cpu_ca8_do_resume, cpu_v7_do_resume
600 define_processor_functions ca8, dabort=v7_early_abort, pabort=v7_pabort, suspend=1, bugs=cpu_v7_ca8_ibe
602 @ Cortex-A9 - needs more registers preserved across suspend/resume
603 @ and bpiall switch_mm for hardening
604 globl_equ cpu_ca9mp_proc_init, cpu_v7_proc_init
605 globl_equ cpu_ca9mp_proc_fin, cpu_v7_proc_fin
606 globl_equ cpu_ca9mp_reset, cpu_v7_reset
607 globl_equ cpu_ca9mp_do_idle, cpu_v7_do_idle
608 globl_equ cpu_ca9mp_dcache_clean_area, cpu_v7_dcache_clean_area
609 #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
610 globl_equ cpu_ca9mp_switch_mm, cpu_v7_bpiall_switch_mm
612 globl_equ cpu_ca9mp_switch_mm, cpu_v7_switch_mm
614 globl_equ cpu_ca9mp_set_pte_ext, cpu_v7_set_pte_ext
615 define_processor_functions ca9mp, dabort=v7_early_abort, pabort=v7_pabort, suspend=1, bugs=cpu_v7_bugs_init
618 @ Cortex-A15 - needs iciallu switch_mm for hardening
619 globl_equ cpu_ca15_proc_init, cpu_v7_proc_init
620 globl_equ cpu_ca15_proc_fin, cpu_v7_proc_fin
621 globl_equ cpu_ca15_reset, cpu_v7_reset
622 globl_equ cpu_ca15_do_idle, cpu_v7_do_idle
623 globl_equ cpu_ca15_dcache_clean_area, cpu_v7_dcache_clean_area
624 #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR
625 globl_equ cpu_ca15_switch_mm, cpu_v7_iciallu_switch_mm
627 globl_equ cpu_ca15_switch_mm, cpu_v7_switch_mm
629 globl_equ cpu_ca15_set_pte_ext, cpu_v7_set_pte_ext
630 globl_equ cpu_ca15_suspend_size, cpu_v7_suspend_size
631 globl_equ cpu_ca15_do_suspend, cpu_v7_do_suspend
632 globl_equ cpu_ca15_do_resume, cpu_v7_do_resume
633 define_processor_functions ca15, dabort=v7_early_abort, pabort=v7_pabort, suspend=1, bugs=cpu_v7_ca15_ibe
634 #ifdef CONFIG_CPU_PJ4B
635 define_processor_functions pj4b, dabort=v7_early_abort, pabort=v7_pabort, suspend=1
640 string cpu_arch_name, "armv7"
641 string cpu_elf_name, "v7"
644 .section ".proc.info.init", "a"
647 * Standard v7 proc info content
649 .macro __v7_proc name, initfunc, mm_mmuflags = 0, io_mmuflags = 0, hwcaps = 0, proc_fns = v7_processor_functions, cache_fns = v7_cache_fns
650 ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
651 PMD_SECT_AF | PMD_FLAGS_SMP | \mm_mmuflags)
652 ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AP_READ | \
653 PMD_SECT_AF | PMD_FLAGS_UP | \mm_mmuflags)
654 .long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | \
655 PMD_SECT_AP_READ | PMD_SECT_AF | \io_mmuflags
656 initfn \initfunc, \name
659 .long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB | HWCAP_FAST_MULT | \
660 HWCAP_EDSP | HWCAP_TLS | \hwcaps
668 #ifndef CONFIG_ARM_LPAE
670 * ARM Ltd. Cortex A5 processor.
672 .type __v7_ca5mp_proc_info, #object
673 __v7_ca5mp_proc_info:
676 __v7_proc __v7_ca5mp_proc_info, __v7_ca5mp_setup
677 .size __v7_ca5mp_proc_info, . - __v7_ca5mp_proc_info
680 * ARM Ltd. Cortex A9 processor.
682 .type __v7_ca9mp_proc_info, #object
683 __v7_ca9mp_proc_info:
686 __v7_proc __v7_ca9mp_proc_info, __v7_ca9mp_setup, proc_fns = ca9mp_processor_functions
687 .size __v7_ca9mp_proc_info, . - __v7_ca9mp_proc_info
690 * ARM Ltd. Cortex A8 processor.
692 .type __v7_ca8_proc_info, #object
696 __v7_proc __v7_ca8_proc_info, __v7_setup, proc_fns = ca8_processor_functions
697 .size __v7_ca8_proc_info, . - __v7_ca8_proc_info
699 #endif /* CONFIG_ARM_LPAE */
702 * Marvell PJ4B processor.
704 #ifdef CONFIG_CPU_PJ4B
705 .type __v7_pj4b_proc_info, #object
709 __v7_proc __v7_pj4b_proc_info, __v7_pj4b_setup, proc_fns = pj4b_processor_functions
710 .size __v7_pj4b_proc_info, . - __v7_pj4b_proc_info
714 * ARM Ltd. Cortex R7 processor.
716 .type __v7_cr7mp_proc_info, #object
717 __v7_cr7mp_proc_info:
720 __v7_proc __v7_cr7mp_proc_info, __v7_cr7mp_setup
721 .size __v7_cr7mp_proc_info, . - __v7_cr7mp_proc_info
724 * ARM Ltd. Cortex R8 processor.
726 .type __v7_cr8mp_proc_info, #object
727 __v7_cr8mp_proc_info:
730 __v7_proc __v7_cr8mp_proc_info, __v7_cr8mp_setup
731 .size __v7_cr8mp_proc_info, . - __v7_cr8mp_proc_info
734 * ARM Ltd. Cortex A7 processor.
736 .type __v7_ca7mp_proc_info, #object
737 __v7_ca7mp_proc_info:
740 __v7_proc __v7_ca7mp_proc_info, __v7_ca7mp_setup
741 .size __v7_ca7mp_proc_info, . - __v7_ca7mp_proc_info
744 * ARM Ltd. Cortex A12 processor.
746 .type __v7_ca12mp_proc_info, #object
747 __v7_ca12mp_proc_info:
750 __v7_proc __v7_ca12mp_proc_info, __v7_ca12mp_setup, proc_fns = HARDENED_BPIALL_PROCESSOR_FUNCTIONS
751 .size __v7_ca12mp_proc_info, . - __v7_ca12mp_proc_info
754 * ARM Ltd. Cortex A15 processor.
756 .type __v7_ca15mp_proc_info, #object
757 __v7_ca15mp_proc_info:
760 __v7_proc __v7_ca15mp_proc_info, __v7_ca15mp_setup, proc_fns = ca15_processor_functions
761 .size __v7_ca15mp_proc_info, . - __v7_ca15mp_proc_info
764 * Broadcom Corporation Brahma-B15 processor.
766 .type __v7_b15mp_proc_info, #object
767 __v7_b15mp_proc_info:
770 __v7_proc __v7_b15mp_proc_info, __v7_b15mp_setup, proc_fns = ca15_processor_functions, cache_fns = b15_cache_fns
771 .size __v7_b15mp_proc_info, . - __v7_b15mp_proc_info
774 * ARM Ltd. Cortex A17 processor.
776 .type __v7_ca17mp_proc_info, #object
777 __v7_ca17mp_proc_info:
780 __v7_proc __v7_ca17mp_proc_info, __v7_ca17mp_setup, proc_fns = HARDENED_BPIALL_PROCESSOR_FUNCTIONS
781 .size __v7_ca17mp_proc_info, . - __v7_ca17mp_proc_info
783 /* ARM Ltd. Cortex A73 processor */
784 .type __v7_ca73_proc_info, #object
788 __v7_proc __v7_ca73_proc_info, __v7_setup, proc_fns = HARDENED_BPIALL_PROCESSOR_FUNCTIONS
789 .size __v7_ca73_proc_info, . - __v7_ca73_proc_info
791 /* ARM Ltd. Cortex A75 processor */
792 .type __v7_ca75_proc_info, #object
796 __v7_proc __v7_ca75_proc_info, __v7_setup, proc_fns = HARDENED_BPIALL_PROCESSOR_FUNCTIONS
797 .size __v7_ca75_proc_info, . - __v7_ca75_proc_info
800 * Qualcomm Inc. Krait processors.
802 .type __krait_proc_info, #object
804 .long 0x510f0400 @ Required ID value
805 .long 0xff0ffc00 @ Mask for ID
807 * Some Krait processors don't indicate support for SDIV and UDIV
808 * instructions in the ARM instruction set, even though they actually
809 * do support them. They also don't indicate support for fused multiply
810 * instructions even though they actually do support them.
812 __v7_proc __krait_proc_info, __v7_setup, hwcaps = HWCAP_IDIV | HWCAP_VFPv4
813 .size __krait_proc_info, . - __krait_proc_info
816 * Match any ARMv7 processor core.
818 .type __v7_proc_info, #object
820 .long 0x000f0000 @ Required ID value
821 .long 0x000f0000 @ Mask for ID
822 __v7_proc __v7_proc_info, __v7_setup
823 .size __v7_proc_info, . - __v7_proc_info